Hi I got my period on the 8th of last month and been having unprotected sex and today I'm suppose to get it and have the worst cramps and when I wipe it's just really dark brown blood what can that be

Hi I got my period on the 8th of last month and been having unprotected sex and today I'm suppose to get it and have the worst cramps and when I wipe it's just really dark brown blood what can that be

Sounds like the beginning of your period.

Hi I got my period on the 5th and had sex after that and two days before my ovulation was suppose to be and now I feel a little nauseous and tired.. what can it be.. my ovulation day was supposedly on the 19

If you are looking at a online or phone app for ovulation, they are estimates and are not correct for many women, if you are not testing for ovulation you really have no idea when it is.

Next, the signs you are giving, sound like a period getting ready to start, does not sound like pregnancy.

At this point, you will have to just wait, Wait 2 weeks, if no period, then do a pregnancy test at that time.