This kind of swing normal?

[soko]

I am in a UGH stage of poker where I win a decent number of pots but get drawn out on even more, therefore am not netting any positive income. I looked through the misc stats in pokertracker, my first 15,000 hands I was net 400BB with Two pair hands, in my last 5,000 hands I have net -100BB. is this a normal swing or is online poker rigged? just kidding, but seriously, is that a normal kind of swing, although I may have a tiny bit of tilt I am noticing being drawn out MUCH more often than in the earlier hands.

Edit: this is at the .5/1 tables on PP if that matters.

[Niediam]

I'd go past normal and say that such swings are expected.