am I pregnant again ?

So my period is due in 11 days 😅😅😅 And lately I been feeling super nauseous here and there also some cramps .. I talked to my doc I asked for a pregnancy test to be done because yes me and my finacè practice safe sex with condoms but we had a few slip ups where he put it in without a condom (he didn't finish inside me he put the condom on after a few strokes )and my doc said no to the test he totally ignored it .. so now I'm sitting her wondering should I go buy a test ? Why do I feel nauseous can it be my period I tend to sometimes start sooner than my <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> says or sometimes later ? Can anyone please help me ..Â