Pregnancy symptoms or not?

Hey!
My boyfriend and I are trying now too..
And by that I mean I've been off the pill for about 2 months now.
Before that I only took one a week or so, I was so busy and somewhere down the line the desire was already there.
I got my period on 05/01, so it's almost time for the next round.
By the way, last cycle was 24 days.
This month I've been having some weird things though:
Around the 15th I really felt stabbing pains in my lower belly, it was such a weird feeling, and when I coughed or laughed there was so much pressure and it hurt a lot, after half an hour this went away.
Before the stabbing started I didn't feel good either.
And then yesterday after work I noticed my underwear was just wet!
A little white stuff in between but otherwise just clear.

Could these be signs of pregnancy?

Just a timeline:
01/05 period +- 3 days
05/11 had sex
05/15 had sex and womb stabbing
05/21 lots of white discharge

By the way I don't feel anything of my period yet