It seems a very reasonable assumption to make: You are not on the Pill and observing the prescription for its use but you are having intercourse. You also did not take the Morning After pill as soon as you missed your period or even before that. Women basically have complete control over their fertility, men do not. Relying on the man either using a condom or having had a vasectomy is not good enough unless in the latter case where you know for certain he is infertile, such as when in a very close long term relationship.
If you have taken none of the above steps but are still having sex then you are deliberately courting pregnancy - yes, you are deliberately becoming pregnant. You would then be joining an unknown percentage of the female population, some of whom are very brazen in this practice, no ifs or buts.
If you have simply been foolish or ignorant then my sympathy is with you, to a certain limited degree (this is not the ignorant middle ages) - monitor the situation and decide now whether you want to keep a child if you turn out to be pregnant. If you turn out to be pregnant and you decide to keep the child then without delay tell the assumed unfortunate father. If you are not pregnant, either give up sex or go on the pill and take it religiously as prescribed, use the morning after pill if you are unsure what your fertility is like.
As with the #metoo doctrine, you should never risk becoming pregnant until you have a clear "Yes" from your partner in the act to his being entirely ready to father your child. Without a Yes you are indulging in a form of rape - yes, as the only one who is in control of your fertility it is down to you (at the very least morally, and arguably even if he also is), including if you are married. The common attitude that the male is responsible for his actions is not good enough, so is the woman. The antiquated "Poor darling girl, disgusting cad who deserves to be shackled" attitude is hopelessly outdated in a world where the law now guarantees support to mother and child, but she has the means which he does not (except for vasectomy, which often is only available with restrictions). Countless lives of not only men but also the resulting children have been blighted by the results of the bloated romanticism heaped on the "wonderful motherhood" goal that females are brought up to worship.
Meanwhile we wait for a reliable male contraceptive to be marketed and/or a determined campaign for men to have a vasectomy until it is available, then with NHS/private sperm banks for those who are not certain about accepting a final end to fertility. Just as the molestation and rape of women will drop on the education of men, so will this education/equipping of men and women have a short term effect on the population growth rate. After that, it will stabilise with children being born to mother and father almost exclusively within consent. Those women determined to have a child on their own will have artificial insemination and raise them without a father's support or involvement at all. Overall, there is likely to be a permanent "fertility rate" drop in most or all western countries.
Unrealistic ? While the fertility image persists, yes. Also while not only nothing is done to redress the gender imbalance, this is not even a general topic of conversation. Meanwhile large numbers of men feel unhappy about having been trapped, women amongst each other actually are fully aware of this happening (and have done the trapping), the upbringing is in circumstances/conditions that are widely seen as undesirable. Then we have the effects on children who suffer permanent psychological scarring through all the different consequences of this being ignored. While this goes on we are in effect saying that the deliberate choice of unhappiness is a natural state - is it really ? We all/most of us know someone in this predicament, what percentage of them will in hindsight on their 60th birthday say it was all for the best ?