What is going on with me?

Please only sensible answers...Ok, so recently I have been feeling quite weird. A few weeks ago I had mively high attraction towards women, then suddenly these went all over the place to liking women and girls I had never liked before. Then suddenly a few (not nice) 'gay' thoughts came into my head, but now these have gone and I never had or have any attraction to men. Now my mood is that I want to go on holiday and be a 17/ 18 year old and go out to parties and go on holiday to 'ahem' and I never usually think like this. But also I haven't really felt any major attraction to women I see around like I did a few weeks back. What is up with me? Is it normal? I'm 17 and male. Thanks.