Was I blocked on WhatsApp messenger?

I have an iPhone 4s and since yesterday, I think I've been blocked by a friend (she owns an Android phone) . Please don't ask why, but I can't message her and see if she actually receives the text. Her status is completely blank (Available, busy, at gym etc.) and her profile pic is gone, so it switched to the one I saved in her contact. I was positive that she blocked me since I can't see the timestamp either (last seen at xx: xx) but when I was clicking on the chat every now and then to see if something changed I saw her being 'online'. This happened a few times during the day but the time stamp always disappeared a little later. I've come to the conclusion that there are 2 possibilities:

1. She blocked me and is unblocking me every now and then to check up on me and see if I'm online
2. She turned off the timestamp (Is it even possible on an Android to do that?) and she left her profile as well as her status blank

What do you guys think? Are there any distinct signs that she blocked me or didn't block me?

If you see any of these signs, you are blocked

http://techwhatsapp.com/how-to-know-if-you-have-been-blocked-on-whatsapp/