Need help with sourdough starter PLEASE!

I started my sourdough starter a week ago, day 2 I did not discard or add due to little activity with bubbles. So day 3 I fed 1/2 cup unbleached flour and 1/3 cup water, did not discard. The starter grew alot, was excited of course. So day 4 I discarded half and fed with 1/2 cup unbleached flour and 1/3 cup water. I repeated this process Day 5 I did the same as day 4. At this point there have been some bigger bubbles but no rise. Day 6, 7, 8 I started feeding every 12 hours, discarding half and feeding with the same measurements. Big bubbles on surface but no rising. The consistency of my starter is about like warm peanut butter. My kitchen stays between 70-75 degrees. Im not sure what I should do, if I should let it sit a couple days or if I have killed my starter. PLEASE HELP! I am new to sourdough starters and I have not been successful yet!

Would it be possible to take picture of starter so we can see what it looks like?