Fingering myself mad me poorly

Pip • Pregnant with a little boy • c-section is booked for 4th July 2016 at 8am ✨
Last night I had crazy passionate sex but couldn't reach orgasm until my partner, so I finished myself off (tried to) I can always make myself orgasm with no problem, but last night I was rubbing my clit and I was going extremely dizzy, the room was spinning and I kept throwing up in my mouth. Why was I like this?