Just got nexplanon birth control out a week almost 2 ago

I had sex the day I got it out and a couple days later had sex, just had sex last night. Well I’ve had no period since the birth control was taken out and now I literally just had a little puddle type thing in my underwear like I thought I started my period but I didn’t it’s like egg whites discharge. Is this a sign of pregnancy? I have a son also I just can’t remember all these things lol thanks in advance!!