Possible to get pregnant right before period/after ovulation?

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Help! I tend to overthink and pre-panic before any real reason to fret. Here’s the story, last period was Feb 22nd-25th ish..according to both <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period tracker</a> apps (including this one ) I ovulated around Feb 27th-March 7th ish ( I say ish bc both apps aren’t exact on dates, they vary between the two )... had sex w/my bf (no pull out, confirmed ejaculation inside me) on March 12th & again on the 14th.. my next period came March 18th-22nd..my bf has been assuming I could be pregnant since the moment he came in me. However, as a woman and a healthcare field worker, I know it’s not typical to get pregnant right before your period or after ovulation..HOWEVER, I’ve been googling like crazy and may be experiencing things that could be in my head and am hoping maybe someone can share possible similar stories or any insight as to the possibility of pregnancy even though it wasn’t a typical fertile window ?? I’ve been having a consistent white creamy discharge (sometimes normal but seemly more excessive than normal for about two weeks..no odor no itch ) also has became very regular in bowel movements and extremely gassy (not normal for me)..Also been feeling very faint tingle cramps/pinches all over ..sometimes in stomach area, back..rarely in breast (not a cramp really bc it doesn’t hurt and they’re really soft and quick)..no sore chest, no sickness..I always have to urinate a lot and always tend to be tired so I can’t look at those as symptoms. My period is expected to come in about a week or so so if it is late or missed of course I would test but to calm my nerves I’d love to hear some stories and have some insight ...thanks ! Also just to add, prior to birth control pills (which I had been on for about 6yrs but came off a year ago) my cycles were very irregular .. since coming off , my periods may come around the same time or almost a month and a half apart.. I once got two in one month..so it makes tracking symptoms a little hard!